This is why you can shrink the sprite graphic for the world map by using a different sprite that has been edited. I've always tended to do this for the world map in my games such as The Magnus Light and it has also been pulled of by other games such as Prophecy The Demon Kingdom. It's not difficult and it makes it look more realistic and visually appealing to some people. Also the fact that you put down starting continent is strange. The place looks like a small island with a house there not a village, a cave and rocky place. That is no continent! Remember that a continent needs to have countries in it. Each country should have at least some towns/cities/villages depending how developed and large they are. My advice is to change this area into an island which should be part of a continent.